The use of hydrogen as a fuel for transport might hold the key for de-carbonizing our overall energy system, by complementing the generation of electricity from fluctuating renewable energy sources such as wind and solar. Twenty-seven years after the signing of the Kyoto Protocol, and possibly around a decade before

illions of dollars and untold hours of research and development go into producing the next must-have products. A report by professional services firm Price Waterhouse Coopers charts the 20 publicly traded companies worldwide that spent the most on R&D in each of the years from 2005 to 2015. Unsurprisingly, motor manufacturers, tech